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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Casati, R. |
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| Kočí, Jan | Prague |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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Susteric, Jacob
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document
Surface properties of concrete and criteria for adhesion of repair systems
Abstract
Before any repair operation, an effective assessment of the concrete substrate has to beperformed. Usually next to the surface reparation of concrete, evaluation of the cohesionofthesuperficialconcreteisrequestedforadhesionanddurabilityreasons.Many authorsdescribetheinfluenceofthesurfacepreparationtechniqueonthesuperficial cohesionofconcreteortheadhesion.However,the realeffectsofsurfacepreparation techniqueonlybegintobeinvestigatedintermsofsuperficialmicrocrackingor roughness quantification.This project was performed in regards to the influence of concrete substrate strength and preparationtechniqueefficiency.Theeffectoftheconcreteremoval/preparation techniqueismostlikelydependentuponthenature andthequalityoftheconcrete substrate.Preparationtechniquesarecomparedfromthepointofviewofconcrete removingbutalsopotentialdeterioration.Thevisualobservationoftheconcrete surfacesindicatesthatthehighpressurewaterjettingtechniqueinducesaparticular texturecharacterizedbylargewavesmostlyparalle ltothewaterflow.Theconcrete slabs have afterwards been covered with a Self-Compacting Repair Mortar and adhesion has been characterized.